The summing properties of the surround response mechanism of cat retinal ganglion cells were assessed by determining area-sensitivity and area-adaptation curves. The two curves were found to be similar for X and Y cells but for many Y cells adaptive sensitivity was found to be dependent upon the size of the test target. These results suggest that, for X cells, the retinal area over which the surround integrates signals and adaptation are spatially coextensive. Most Y cells appear to pool adaptive effects over a smaller region than they pool signals.
- Retinal ganglion cells
ASJC Scopus subject areas